Pet Care, Toys, Supplies and Products for Animals Design Tagg—The Pet Tracker Pet Location and Activity Tracker by Snaptracs, Inc. Tagg—The Pet Tracker is a purpose-built device that uses advanced GPS and wireless technology to track a pet’s location and activity. The lightweight, water-resistant Tagg tracker attaches to a pet’s existing collar. With Location Tracking, if a pet leaves its designated “Tagg zone” (geofence), the owner is quickly notified by text and email so they can locate and track their pet on a map. With Activity Tracking, the owner can track a pet’s daily activity levels to help ensure the pet receives the proper amount of vet-recommended exercise.